海水基压裂液研制

doi:10.7623/syxb2016S2016

石油学报 ›› 2016, Vol. 37 ›› Issue (S2): 131-136.DOI: 10.7623/syxb2016S2016

海水基压裂液研制

张胜传, 陈紫薇, 程运甫, 刘学伟, 付大其, 周震, 李晓娟

中国石油大港油田公司石油工程研究院天津 300280

收稿日期:2016-07-18 修回日期:2016-12-15 出版日期:2016-12-30 发布日期:2017-03-08
通讯作者: 张胜传,男,1964年3月生,1984年获山东大学学士学位,2001年获石油大学(北京)硕士学位,现为中国石油大港油田公司石油工程研究院副总工程师、教授级高级工程师,主要从事油气田措施改造科研及管理工作。Email:zhangshchuan@petrochina.com.cn
作者简介:张胜传,男,1964年3月生,1984年获山东大学学士学位,2001年获石油大学(北京)硕士学位,现为中国石油大港油田公司石油工程研究院副总工程师、教授级高级工程师,主要从事油气田措施改造科研及管理工作。Email:zhangshchuan@petrochina.com.cn

Development of seawater based fracturing fluid

Zhang Shengchuan, Chen Ziwei, Cheng Yunfu, Liu Xuewei, Fu Daqi, Zhou Zhen, Li Xiaojuan

Research Institute of Petroleum Engineering, PetroChina Dagang Oilfield Company, Tianjin 300280, China

Received:2016-07-18 Revised:2016-12-15 Online:2016-12-30 Published:2017-03-08

摘要/Abstract

摘要：

为了满足海上低渗油藏大型压裂需求，研究优选可用海水配制的压裂增稠剂和交联剂，形成了耐温150℃的海水基压裂液。该压裂液用过滤后的海水直接配制，无需屏蔽或除去Ca²⁺、Mg²⁺。实验表明压裂液与地层流体混合无絮状或沉淀，残渣含量仅为61.3 mg/L，对岩心基质伤害率低于20%；另外，增稠剂溶胀速度快，比常规瓜胶提高50%以上，可实现连续混配。通过GS16-23井先导性试验表明，海水基压裂液现场配制工艺简单，性能稳定，施工顺利。该井压前停喷，压后3 mm油嘴，日产油11.17 t、产气1×10⁴m³。

关键词: 海水, 压裂液, 低渗透, 增稠剂, 交联剂

Abstract:

To achieve the large-scale fracturing of low-permeability offshore reservoirs, the fracturing thickening agent and crosslinking agent that can be prepared using seawater was studied and selected to form the seawater-based fracturing fluid with the temperature resistance of 150℃. This fracturing fluid is directly prepared with filtered seawater, not requiring the blocking or removal of Ca²⁺ and Mg²⁺. Experiments show that no flocculence or precipitation occurred when fracturing fluid was mixed with formation fluid. The residual content is only 61.3 mg/L, and the core matrix damage rate is less than 20%. In addition, the thickener swelling speed is faster than the conventional guar gum by more than 50%, leading to a continuous mixture. The pilot test of Well GS16-23 shows that the seawater-based fracturing fluid has simple preparation process, stable performance and smooth construction. The well pump is stopped before fracturing. After fracturing, the choke of 3 mm has the daily crude oil and natural gas yield of 11.17 t and 10 000 m³, respectively.

Key words: seawater, fracturing fluid, low permeability, thickener, crosslinking agent

中图分类号:

TE357.1

张胜传, 陈紫薇, 程运甫, 刘学伟, 付大其, 周震, 李晓娟. 海水基压裂液研制[J]. 石油学报, 2016, 37(S2): 131-136.

Zhang Shengchuan, Chen Ziwei, Cheng Yunfu, Liu Xuewei, Fu Daqi, Zhou Zhen, Li Xiaojuan. Development of seawater based fracturing fluid[J]. Acta Petrolei Sinica, 2016, 37(S2): 131-136.

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海水基压裂液研制

Development of seawater based fracturing fluid

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